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dc.contributor.author
Valdez, Stephanie R.
dc.contributor.author
Daleo, Pedro
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dc.contributor.author
DeLaMater, David S
dc.contributor.author
Silliman, Brian R
dc.date.available
2024-05-30T09:57:09Z
dc.date.issued
2023-05-25
dc.identifier.citation
Valdez, Stephanie R.; Daleo, Pedro; DeLaMater, David S; Silliman, Brian R; Variable responses to top-down and bottomup control on multiple traits in the foundational plant, Spartina alterniflora; Public Library of Science; Plos One; 18; 5; 25-5-2023; 1-16
dc.identifier.issn
1932-6203
dc.identifier.uri
http://hdl.handle.net/11336/236490
dc.description.abstract
While the effects of top-down and bottom-up forces on aboveground plant growth have been extensively examined, less is known about the relative impacts of these factors on other aspects of plant life history. In a fully-factorial, field experiment in a salt marsh in Virginia, USA, we manipulated grazing intensity (top-down) and nutrient availability (bottomup) and measured the response in a suite of traits for smooth cordgrass (Spartina alterniflora). The data presented within this manuscript are unpublished, original data that were collected from the same experiment presented in Silliman and Zieman 2001. Three categories of traits and characteristics were measured: belowground characteristics, litter production, and reproduction, encompassing nine total responses. Of the nine response variables measured, eight were affected by treatments. Six response variables showed main effects of grazing and/ or fertilization, while three showed interactive effects. In general, fertilization led to increased cordgrass belowground biomass and reproduction, the former of which conflicts with predictions based on resource competition theory. Higher grazing intensity had negative impacts on both belowground biomass and reproduction. This result contrasts with past studies in this system that concluded grazer impacts are likely relegated to aboveground plant growth. In addition, grazers and fertilization interacted to alter litter production so that litter production disproportionately increased with fertilization when grazers were present. Our results revealed both predicted and unexpected effects of grazing and nutrient availability on understudied traits in a foundational plant and that these results were not fully predictable from understanding the impacts on aboveground biomass alone. Since these diverse traits link to diverse ecosystem functions, such as carbon burial, nutrient cycling, and ecosystem expansion, developing future studies to explore multiple trait responses and synthesizing the ecological knowledge on top-down and bottom-up forces with trait-based methodologies may provide a promising path forward in predicting variability in ecosystem function.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Public Library of Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
top-down
dc.subject
bottom-up
dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Variable responses to top-down and bottomup control on multiple traits in the foundational plant, Spartina alterniflora
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-05-29T15:42:32Z
dc.journal.volume
18
dc.journal.number
5
dc.journal.pagination
1-16
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Valdez, Stephanie R.. University of Duke; Estados Unidos
dc.description.fil
Fil: Daleo, Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
dc.description.fil
Fil: DeLaMater, David S. University of Duke; Estados Unidos
dc.description.fil
Fil: Silliman, Brian R. University of Duke; Estados Unidos
dc.journal.title
Plos One
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0286327
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1371/journal.pone.0286327
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